With a yogurt maker there’s no need to preheat it since the appliance will take care of heating and maintaining the temperature. But if you make soymilk yoursel

With a yogurt maker there’s no need to preheat it since the appliance will take care of heating and maintaining the temperature. But if you make soymilk yourself, the milk has to be cooked for sometime (regardless of whether you’re going to consume it directly or make yogurt with it).